Saw-table gage



(No Model.) 2 Sheets-Sheet 1; J. HARLEY. SAW TABLE GAGE.

N0. 405,310. Patented June 18, 1889.

Wifnei Jik n Harley by m r-x M wig;

(No Model.)

Patented June 18, 1889..

'IIHHHHWH H I tho n hu. Wnhin on DA UNITED STATES PATENT OFFICE.

JOHN HARLEY, OF DETROIT, MICHIGAN.

SAW-TABLE GAG E.

SPECIFICATION forming part of Letters Patent No. 405,310, dated June 18, 1889.

Application filed October 31, 1888. Serial No. 289,618. (No inodel.)

To all whom it may concern.-

Be it known that 1, JOHN HARLEY, a citizen of the United States, residing at Detroit, in the county of \Vayne and State of Michigan, have invented certain new and useful Improvements in Saw-Table Gages, of which the following 1s a specification, reference being had therein to the accompanying draw:

ings.

This invention relates to new and useful improvements in machines for shaping Wood; and the invention consists in the particular construction, arrangement, and operation of the different parts, all as more fully hereinafter described.

In the drawings which accompany this specification my invention isshown in connection with a machine especially designed for shaping chair-backs.

Figure 1 represents a vertical central crosssection of the machine. Fig. 2 is a plan of the lower table on which the work is fed to the saw. Fig. 3 is a detached perspective view of the lower and upper tables which carry the work. Fig. 4 is a detached perspective View of one of the hinged tables shown in Figs. 4 and 6. Fig. 5 is a plan view of the lower table differently arranged for a particular kind of work. Fig. o is a central crosssection through Fig. 5. Fig. 7 is a detached perspective view of the modification of the upper table. Fig. Sis a plan view thereof, showing its operation with some work placed thereon. Fig. 9 is a similar view. Fig. 10 is a blank, showing in dotted lines the work performed by the lower table; and Fig. his a detached perspective View of a finished piece of work.

A is the frame of an ordinaryband-saw machine. B is the band-saw. O is the sawguide. D is the table or bed, and E is a slot in the table in which the saw works, all of known construction and operation. Upon the top of the bed or table D is rotatorily mounted the annular table G, preferably by securing upon the bed D the circular flange H, which projects upwardly and enters a corresponding eurve in the under side of the table G, all so arranged that the table turns upon the annular flange, motion being communicated thereto in any suitable manner,

I such as providing the table G on the under side with suitable gearing to engage with the pinion I, which derives its motion by suitable connection with the operating parts of the machine. WVithin this table G is mounted the fence J and J, the former being mounted rotatorily {and driven with the same speed and in the same direction as the annular table G, (by suitable connection with the driving mechanism,) or mounted stationarily, as in Figs. 5 and 6. This fence projects above the table G to form a stop for the Work laid on the annular table, and its outer face may be circular, concentric with the table G, or may be partly circular and partly polygonal, as shown, and for the purpose more fully hereinafter described.

Between the outer and inner tables there is sufficient space left to permit of free movement of the saw. I

The operation of the parts of the machine so far described is as follows: The work, which is supposed to be a simple block of wood, as shown in Fig. 10, is placed upon the annular table G, which is provided for the purpose with suitable stopsK to carry the work. At the same time the inner face of the block is shoved against the fence, which maintains tion I) is cut off from the block its inner face is now circular; but on account of the circular portions 0, intermediate between the flat portions a on the fence J, the block will find a bearing on both. ends of the fence against the circular portions 0.

The advantage of having the rotary feedtable is that the tablev carries the work Without the assistance of the operator after itis after removing the cut-off pieces, can place it at once back for a further operation until the block is entirely out up.

It is obvious that the circular fence .l can be employed, instead of the partly-circular fence J when the work is of suitable size or shape to be held steady enough during the first operation by the stop K alone; and if such a circular fence J is used it is obvious that it is not necessary to rotate it in conjunetion with the work-table G, and it may be stationarily secured to the work-table, as shown in Fig. 5, and preferably adjustable to allow a varying thickness of the cut-off portions.

To permit of sawing up the block at an angle with the saw, as shown in Fig. 6, as is often required in shaping chair-backs which are inclined baclnvardly, I use su1i)plementary tables G, hinged upon the table G, as shown in Fig. 5, wherein (Z shows the hinges and K the work-carrying stops, which are now secured upon the hinged tables. In connection with these tables I provide the table D with the guide-rail i), hinged or otherwise secured upon the table D, so that it may be thrown out of operation when not required, and this guide-rail is so arranged that at the proper time it will engage under the free end of the hinged tables G, as shown in Fig. (3, and lift them up to form the necessary incline while the saw is in operation, after which they return to their normal position.

To permit of the band-saw being removed from the machine for the purpose of sharpening, the table G is cut through at any suit able point to form a saw-slot M, which may be made to register with the saw-slot E in the table. To disengage the saw and to prevent that slot from weakening the table, a removable dowel-pin N is preferably made to interlock the free ends. To further shape the chair-back, which, as is well known, is also curved upon the edges 6 in Fig. 11, I provide the machine with an upper feed-table O, or the modification 0'. (Shown in Figs. 7 and S.) The former is a complete disk rotatorily secured above the lower table at the end of a suitable overhanging bracket 1 from the frame of the machine, and this table is provided near its outer edges with suitable bedpieces R, adapted to fit on top of the blanks and provided with end stops S and rear stops S to carry the work. By the operation of the lower table upon these bed-pieces they are first curved upon one edge by carrying them through the saw, and then afterward they are curved upon the other edge by clamping them upon the supplementary abutments of the clamping-plates T, as shown in Fi 9, all as described in my former application for patcut, the only improvement of my machine in this respect being the use of the upper table 0 to carry the supplementary beds upon instead of securing them to the lower table, as is in my former application. The advantage I thereby derive is that I can carry the two operations at the same time instead of successively, as with my former machine. To impart a rotary motion to the upper table 0, any suitable device may be employed. In the drawings I show two uprights U secured to the lower table G, which strike against certain projections U on the under side of the upper table, and thereby produce an intermittent rotary motion.

Instead of the rotary upper bed 0, I have devised the construction shown in Figs. 7 and 8, in which the upper table 0 is stationarily secured to the bracket P, and is provided upon its free end with a guide-track V, upon which the supplementary bed R, which carries the work, is adapted to reciprocate, being carried at the free end of the arm NV, one end of which projects into the path of the strikerpins U, and has imparted to it thereby an oscillating movement, which carries the sup plementary bed 0 the necessary distance to present the flange to the saw and to be returned after finishing the work by the reaction of the spring \V as soon as the lever \V is released from the striker-pin. The supple mentary bed R in this instance is of the same character and construction as the supplementary beds R.

The machine is provided, where necessary, with suitable adjustments for different work, such as securing the overhanging bracket 1 adjustably upon the table for the purpose of securing larger and smaller tables thereto.

iVha-t I claim as my invention is 1. In a band-saw machine a rotary annular feed-table adapted to carry the work, and revolving with its inner edge in proximity to the saw, substantially as described.

2. The combination, with the table of a band-Jaw machine, of a rotary annular feedtable mounted thereon to revolve with its innor edge in proximity to the saw, and a fence within said feed-table, substantially as described.

The combination, with the table of a band-saw machine, of a rotary annular feedtable mounted on said table, revolving with its inner edge in proximity to the saw, and of a saw-slot in said feed-table adapted to register with the saw-slot of the band-saw table, substantially as described.

a. The combination, with the table of a band-saw machine, of a rotary annular feedtable mounted on said table with its inner edge in proximity to the saw, a saw-slot in said feed-table adapted to register with the saw-slot of the band-saw table, and a detachable connection between the severed ends forming the saw-slot in said feed-table, substantially as described.

5. In a band-sawmachine, the combination, with the saw-table, of the rotary feed-table mounted thereon to revolve with its inner edge in proximity to the saw, a supplemei'itary table hinged at its inner edge near the inner edge of said rotary feed-table and provided with work-carrying stops, and a guide-rail secured to the saw-table and adapted to lift up the outer edge of the supplementary table, substantially as described.

6. The combination in a band-saw machine, of the band-saw table, a rotary annular feedtable mounted thereon to revolve with its inner edge in proximity to the saw, and a ro- 'tary feed-table mounted above the said rotary annular feed-table and revolving with its out-er edge in proximity to the saw, substantially as described.

7. The combination, with a band-saw machine provided with a saw-slot E, of the rotary annular feed-table G, the saw-slot M in said feed-table adapted to register with the sawslot E, and the dowel-pin N, substantially as described.

8. The combination, With a band-saw machine, of the annular feed-table G, the supplementary hinged tables G, and the guiderail L, substantially as described.

9. The combination, with a band-saw machine, of a rotary annular table G, having work-carrying stops K, and a fence secured within said annular table, an upper feed-table adj ustably secured above the lower feed-table and provided with Work-carryin g devices and actuated by the lower feed-table, substantially as described.

10. The combination, with a band-saw machine provided with an annular feed-table G, which is provided with'work-carrying stops and a fence secured within said annular feedtable, of the upper feed-table 0', provided of the saw on the work, substantially as de-' scribed.

In testimony whereof I affix my signature, in 5 presence of two witnesses, this 18th day of September, 1888.

JOHN HARLEY.

Witnesses P. M. HULBERT, J OHN SoHUMAN. 

